William m



(No Model.)

W M SHEETS KNOTTER FOR HARVESTERS.

No. 592,514. Patented Oct. 26,1897.

WK asses Nirnn STATES PATIENT Erica,

WILLIAM M. SHEETS, OF DEFIANOE, OHIO, ASSIGNOR OF ONE-HALF TO MIOHEALWVALZ, OF SAME PLACE. I

KNOTTER FOR HARVESTERS.

SPECIFICATION forming part of Letters Patent No. 592,514, dated October26, 1897.

Application filed January 7, 1897- To (l/ZZ whom it may concern.-

Be it known that I, WILLIAM M. SHEETS, a citizen of the United States,residing at Defiance, in the county of Defiance and State of Ohio, haveinvented certain new, useful, and valuable Improvements in Knotters forHarvesters, of which the following is a specification.

My invention relates to an improvement in knotters for harvesters, theobject being to provide means for causing positive movements of theknotting-nib; and it consists in combined mechanism for operating thenib in both of its movements, whether inward or outward.

In the accompanying drawings, Figure l is a view in side elevation of myimproved knotter and some of the connected mechanism. Figs. 2 and 3 areviews in side elevation, taken from opposite sides, parts being insection. Fig. 4 is a bottom plan, and Fig. 5 is a detail.

A represents a portion of the frame of the machine. This frame has aplate 1 with hole 2 therein.

B is the knotter-shaft, the same being revolubly supported in the hole 2in the frame. On the upper end of this shaft is secured the usualbevel-gear 3, through which motion is imparted to the knotter, and onthe lower end is securely, attached the nib 4. This nib 4 is groovedthrough its bottom, whereby it is divided into two parts, and themovable nib 5 is pivoted between said parts and cooperates therewith insubstantially the usual manner. The means for operating this pivoted nibdiffers from the prior art in this respect that the operation of thepivoted nib is always positive and direct and the adjustment of theclosingcam 7 is always on a stationary part of the machine, where it canbe readily adjusted without reference to the position of other parts.Hitherto such a cam has been adj ustably connected with theknotter-shaft, but the objection to this arrangement is that unless theparts of the machine are at a certain posit-ion it is difficult, if notabsolutely impossible, to set the cam. It frequently necessitatesstarting the machine up until the knotter has turned to a certainconvenient point,

Serial No. 618,370. (No model.)

and then it is just as liable to turn a little too far or not quiteenough, because it is next to impossible to control the movement ofthese parts, or else it is necessary to take too much of the machineryapart to get at the set-screw. In the present invention a fixed place isprovided for this cam 7. It is set in a dovetailed hole 8 in an edge ofplate 1, and it being provided with the elongated slot 9 and a set-screw10 extending therethrough it is evident that it can be slid directlydownward at any time as it wears off and occasion requires it into thepath of the roller 11 on the nib 5. This closing-cam 7 is always in oneposition and thus may be made readily accessible at all times, and bymerely loosening the set-screw 10 a trifle and giving a smart strokewith a wrench or hammer upon the closiug-cam it is fed forward to therequired position, and the setscrew is then set to hold and retain it inposition. A depending-cam flange 12 is provided for opening the nibs atthe required interval in the rotation of the knotter. I

A twine-holder 13 is revolubly supported on the frame of the machine atsome convenient point, and it is adapted to receive and hold the twine,and a pivoted twine-carrying arm 14: carries it to the knotter.

The knotter is rotated in the usual manner, and the roller 11 on thepivoted nib upon reaching the depending cam-flange is opened to receivethe twine. When it reaches the closing-cam, it is closed over the twine,and the knot is formed as usual.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. In a knotter, the combination with apair of nibs, one rigid and the other pivoted, of a pair of rigid cams,one fixed and the other adjustably connected with the frame of the machine for positively opening and closing the pivoted nib.

2. In a knotter,the combination with a plate having a hole therein, andprovided with a depending cam-flange, of a rotary shaft having a nibfixed thereon, a nib pivoted beneath this nib and havingaroller thereon,and a closingcam rigidly and adjustably connected with the plate andadapted to be set to close the thereon, and two rigid cams one fixed'andthe pivoted nib. h 'f h other adjustably attached to the frame.

3. The combination with t e frame 0 t e. machine, a twine-holderrevolubiy supported WILLIAM SHEETS 5 thereon, and a, twine-stripperpivoted to the Witnesses;

frame, of a knotter comprising a rotary shaft W. D. HILL, having a nibsecured thereon and one pivoted HENRY G. BAKER.

